SSA

SSA or ssa may refer to:

• Sub-Saharan Africa

• Sainsbury's Staff Association
• Schonfeld Strategic Advisors, an American hedge fund
• Scottish Socialist Alliance, a coalition of left-wing bodies, fore-runner to the Scottish Socialist Party
• Seismological Society of America, an international scientific society founded 1906
• Shan State Army, a former insurgent group in Burma
• Shipconstructors' and Shipwrights' Association, a former British trade union
• Singapore Scout Association, a youth movement founded in 1910
• Slovak Society of Actuaries (Slovak: Slovenská spoločnosť aktuárov), a professional association in Slovakia
• Soaring Society of America, an American sporting society founded in 1932
• Society for the Study of Addiction, a British society with charitable status
• Society of Scottish Artists, an artists society founded in 1891
• SSA Global Technologies, an American software company acquired by Infor Global Solutions
• Steamship Authority, a Massachusetts ferry service and regulatory body
• Sudan Studies Association, an American professional association
• Swedish Society of Radio Amateurs, an amateur radio organization

• School of Saint Anthony, Quezon City, Philippines
• Secular Student Alliance, United States
• Shady Side Academy, Pittsburgh, Pennsylvania, United States

• Saudi Space Agency, a Saudi government agency
• Senior Special Assistant, a Nigeria government role
• Social Security Administration, an independent agency of the U.S. federal government
• Social Security Agency (Northern Ireland)
• Selective Service Act of 1917, an American piece of legislation signed by President Woodrow Wilson during WWI that established nationwide conscription
• State Security Agency (South Africa), a South African intelligence service

• Stochastic Simulation Algorithm
• Serial Storage Architecture
• Singular Spectrum Analysis
• Software Security Assurance
• Solid State Array, in flash data storage using solid-state drives
• Start of Selected Area, a control character in the C1 control code set
• Static single-assignment form, a property of intermediate representations used in compilers
• Stationary Subspace Analysis
• Strong subadditivity of quantum entropy
• SubStation Alpha and .ssa file format, a video subtitle editor
• Super systolic array

• Semantic structure analysis
• Single-strand annealing in homologous recombination
• Side-side-angle in geometry for solving triangles
• Specific surface area, a property of solids

• Anti-SSA/Ro autoantibodies
• Senile systemic amyloidosis
• Sessile serrated adenoma, a type of pre-malignant intestinal polyp
• Special somatic afferent
• Sulfosalicylic acid

• ESA Space Situational Awareness Programme
• Same-sex attraction
• Sarva Shiksha Abhiyan, the Government of India's Education for All programme
• Self-sampling assumption
• Serious Sam Advance, a 2004 video game
• Shared services agreement
• Slippery slope argument, a rhetorical device (and often a fallacy)
• Special Service Agreement, between the UN and a contractor
• Special services area or business improvement district
• SSA, Grand Cross of the Order of the Star of South Africa
• Supervisory Special Agent
• Salvador Bahia Airport, an IATA code
• Nilo-Saharan languages, ISO 639-2 and ISO 639-5 codes